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Here's what they say about us

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Loved the collaboration with GSA on a telemarketing project. they think along with you and very much flexible with their services.

Mishani Gamage, LED Trade Marketing


A great positive approach to telemarketing, very open communication, and good results

Bert Spencer, Sales Manager


Targeted approach and clear results. I cannot recommend the GSA team enough!

Egizia-Maria Felice, Marketing Manager GB & IE

Miele Professional

We engaged GSA Marketing to do telemarketing/LinkedIn/Email campaigns for our company. We had a difficult and specific target audience, and GSA worked diligently over a few months to reach these people, and then deliver these campaigns efficiently and effectively. As a result of these campaigns we are now in communications with many of our most desired target leads, well down the long sales cycle that our business necessitates.

I would highly recommend GSA to everyone, I have really enjoyed working with Jonathan, Kevin and Alex. We will be carrying out more campaigns in the new year.

Kate Dela Cruz

Enviro Waste Management

It was a joy working with the team from GSA. The ability to conduct weekly reviews directly with the telemarketers was very reassuring and allowed us to tweak our messages in a timely manner. We are very satisfied not only with the results, but the process and delivery as well.

Mark Gan, Senior Marcom Manager

ITMA Services

We partnered with GSA so we could quickly, professionally, and effectively reach-out to our European customers. GSA enabled us to interact with our client base at a speed with which we would never have been able to replicate using just our in-house language team. We had regular, professional updates with the project team and had thorough and insightful quantitative data, as well as interesting qualitative feedback. It was an enjoyable and successful collaboration.

Clive Gilbert - European Managing Director

International Dance Supplies Ltd

We have worked with GSA for more than 10 years.  Throughout that time they have been simply outstanding.
From a campaign perspective, Kevin and Julia are quite the dream team – Julia’s ability to get to speak to the right individual and put across a compelling message is simply second to none & Kevin’s superb management of the campaign ensures you are fully updated at the click of a button.

Jonathan’s ability to transform our initial email/linked in wording into something that was both meaningful and concise ensured we had a superb hit rate.

We really can’t thank them enough and are already in discussions about our next campaign

Gillian Tait - Managing Director

Competent Adviser

We have known Jonathan and his team at GSA for many years. Having used them on multiple B2B campaigns I can certainty recommend them to any company needing an effective telemarketing company that is focused on results. GSA’s telemarketers have vast experience and the effort they go to understand the product and service is brilliant and shows in the results. Keep up the great work!

Murray Warren, Director


GSA has supported my team over a number of years to deliver high quality leads to our sales teams. Their professional approach from the initial brief through to calling and reporting, fully integrates into our lead generation campaigns.

Marketing Director


We worked with GSA on a B2B marketing campaign following sub-par results using in-house resources. We initially decided on a set number of hours but ended up doubling it after our conversion rate was increased by an amazing 108%. GSA ensured our campaign results were updated on a daily basis and their team followed up with us weekly to ensure the campaign was going as planned. We were impressed with the team’s professional, yet warm manner, making them an absolute pleasure to work with. We look forward to working with GSA in the future.

Michaela Rodgers

Nuclei Group 

The GSA team have been supporting some of our Marketing outreach efforts and we could not be more satisfied with the service. They are great at giving advice, professional in executing campaigns, and efficient in driving results. A real pleasure to work with them


Dr Egizia-Maria Felice. DPhil Marketing Manager

Oxentia Ltd

The team at GSA were extremely helpful and professional, providing advice and thorough explanations on each part of the project we worked with them on. They took the time to meet with us face to face, to discuss the best way to approach the work, and were available to speak to whenever needed. Jonathan is a fountain of knowledge and went above and beyond to help us with any questions we had. It wasn’t the easiest project to work on but GSA helped every step of the way. Thank you!

Amelia Cowan

U+I Global PLC

We were extremely pleased with the activity since we had a large unqualified database that meant our internal team were unable to identify and focus on the best targets for new business development. With the help of GSA, we were able to reach out to prime prospects much more quickly for higher value sales. We would recommend GSA for anyone that wants to generate targeted leads for their business.

Darwin Seidler, Sales Manager, Germany


Fully recommended Jonathan & Kevin and the rest of the GSA team and the service they offer. Very easy to work with and delivered real results for our business despite the campaign being seriously impacted by CV19!

Roy Knappett, Sales & Marketing Director

HTS Spares

Right from the start GSA understood the needs of our cross-Europe tele-research campaign fully & were able to advise and adapt to our specific requirements. The daily reporting helped us understand, first-hand, how the campaign was progressing and help keep costs within the allocated budgets. They were very flexible in terms of the native speakers used as subsequent data was added to the project. I would highly recommend them and will certainly be using them for other projects”

Damian Jackson – Insights Analyst EMEA

OKI Europe Ltd

The Sales team at Ultrimax were impressed with the professional assistance of GSA Business Development, clear visual reporting on a daily basis ensured focused efforts on generating well profiled leads, which helped bolster our ongoing sales growth in 2019. I would recommend GSA Business Development to anyone looking for that extra support in lead generation

Sales Director


GSA are a company with a difference, adding value above what is expected when it comes to telephone campaigns. To be specific about that, we got advice and data cleansing as extras. They are willing to link in with systems and have outstanding reporting. But more than all of that they are transparent so that you know exactly where you stand on a campaign. We would recommend them.

Bruno Beech, Marketing Director

Plus Packaging

GSA allowed us to explore a new vertical and gave us valuable insight into this new market.

They delivered on the campaign goals and we were really impressed with the quality of the calls.


Marketing Manager


“GSA took on board our comprehensive brief and provided an excellent service from campaign inception through to analysis upon completion. We were particularly impressed by the professionalism and telephone manner of Julia March in conducting the calls to medical staff. Julia was quick to understand our technology and the correct terminology to use, with her distinct conversational tone helping to sell the benefits and uses of our speech privacy systems rather than focusing on the product. Likewise, the communications from both Julia and Kevin Harmsworth throughout ensured we remained fully up to date with progress, even when the campaign was temporarily put on hold to garner better results later in the year.”

Steve Rees-Smith, Marketing/PR

Vaughan Sound Installations Ltd

“GSA Marketing worked with us on a test campaign to assess the viability of an outbound sales function in what is a relatively niche sector (outdoor learning residential breaks for Special Educational Needs schools) for our centre in the Lake District. The target market was Teachers or Special Needs Coordinators within schools and colleges, with us providing contact details, albeit un-validated, from our existing database – a combination of organisations who had enquired but never visited, or lapsed. We asked them to pitch for our business from a shortlist of potential suppliers and we chose them due to the bespoke attention they paid to our enquiry, and once selected were very pleased with the personal attention they gave us at a senior level. Setting up the campaign with them was very straightforward and we were impressed by the level of reporting through the campaign and the quality of the calls made by their staff, with each call being recorded. Warm leads were passed to us to follow-up and the quality of the contact information supplied very good. The nature of our business is that 1st contact to booking is usually relatively long, but we were delighted that the month long campaign quickly resulted in a booking from an entirely new customer which more than covered the capital cost of the test. We also now have several schools visiting the centre on an inspection trip, and previous experience tells us that a proportion of these will also convert. All in all, we were very pleased with this outbound sales test and GSA’s contribution to its success. We now have the confidence to invest in sales resource at the centre as a direct result”

Justin Farnan, Business Manager (Sales and Marketing)

Lake District Calvert Trust

GSA Business Development, was contracted by the Hong Kong Trade Development Council from November 2017 to May 2018 to provide telemarketing services for our GDPR consent campaign in the markets covered by this office.

GSA called a total of 74,000 records and managed to secure a good consent rate. The company was responsive and always willing to listen to our fears and concerns. GSA is a cool-minded and professional TM agency, and I was happy with the results that they obtained.

GSA was awarded the contract on the basis of a competitive tender, and so their costs were reasonable. Thanks to their efforts, we managed to cover our databank before the deadline of 25 May.

I would happily appoint them again. All things being equal.

David Marsden- Director UK, Benelux & Ireland

Hong Kong Trade and Development Council (HKTDC)